Meanwhile, the Knight Foundation put its money and might behind maps owned by no corporation: OpenStreetMap.

Like Wikipedia, OpenStreetMap is a map that anyone can edit. The data comes from volunteers who use GPS devices or just local knowledge to map their environments. If you want to fix a mistake, just hit the ubiquitous “Edit” button.

The site’s existing user interface is clunky and unfriendly, however. Knight awarded a $575,000 News Challenge grant to OSM developer MapBox to refine that user interface and develop new APIs to make the data easily exportable.

“What’s critical about OpenStreetMap is not the map. It’s the data,” said MapBox CEO Eric Gundersen at the ONA conference in San Francisco. The map you see at openstreetmap.org is purposely ugly, a visual wrapper around the wealth of data underneath. “The power of OpenStreetMap is the power of grabbing that data out and doing stuff with it,” he said.

Gundersen had me visit the site, create an account, and look up my old San Diego address. He watched as I worked. I saw that the street name was listed incorrectly, so I went to fix it. The Flash-based interface was pretty rough, but I figured it out. It was gratifying to correct a detail I knew to be wrong; you can’t do that on an iPhone.

People like Gundersen believe data is better if anyone can contribute — and everyone owns it.

“It’s not all about buying data. It’s not all about driving cars around,” he said, referring to Google’s ubiquitous Street View vehicles. “It’s about building a community around data. Google gets that, and that’s why they made Map Maker. The difference here is, Who owns that data? You don’t.”

The Knight Foundation has previously funded mapping projects focused on the end user, such as Stamen Maps and TileMill. In this case, Knight is drilling beneath the presentation layer and investing in the data underneath — fitting for the data round of the Knight News Challenge.

“The big part of the investment is making it easier to get data out, so it’s more consumable,” Gundersen said. He wants to see news organizations ordinary users creating their own projects with OSM data. MapBox will create more intuitive, low-level APIs to help introduce new developers to the community.

Gundersen said he expects the bulk of the new OpenStreetMap tools to be launched in spring 2013. All of the code will be open-sourced and posted to GitHub.